Manual - 8500A Series Peak Power Meter - Giga-tronics

Series 8500A Peak Power Meters
5.3.4 Initialization
A. Turn the instrument on.
The PPM will automatically perform a self-test. At the completion of the self-test, the PPM will
return to the last setup before power down. If the self-test failed, note the failure number and proceed
by pressing [CLEAR].
B. Calibrate the Detector.
The following portion of the Calibrator procedure needs to be done only if the detector being used is
different than the one that was last used with the PPM.
1. Press [CLEAR].
2. Connect the detector to the Calibrator output (use channel A detector if the unit is an 8502A).
3. Press [UNITS] and wait for the calibration cycle to complete.
4. Disconnect the detector from the Calibrator output.
5. If the unit is an 8502A and a channel B detector is connected, perform the following steps.
a. Connect the channel B detector to the Calibrator output.
b. Press [CLEAR] [UNITS] and wait for the calibration cycle to complete.
c. Disconnect the detector from the Calibrator output.
C. Set the Internal Clock
The Internal Clock can be set as follows:
1. Press [MENU] (5) [F3] [F1].
2. Enter the correct date ([mmddyy] [UNITS]).
3. Enter the correct time ([hhmmss] [UNITS] [F3]).
5.3.5 A8 Front Panel Interface Board
A. Display Brightness Adjust
1. Connect the DVM HI lead to A8TP9 (+HV).
2. Connect the DVM LO lead to chassis.
3. Read the VWrite+ voltage shown on the sticker located on the back of A10 (the back of the
display).
4. Adjust A8R33 until the DVM reads within ±1 V of VWrite+. The display should be of even
brightness across the screen without any smearing.
5. Disconnect the DVM leads.
5-12 Manual No. 20790, Rev C, November 1998
Superceded by Revision D, March 2009